ref: 16a7bb8f8cc86b22ce157e0944f66f60a556590f
dir: /lib/bio/test/bio-unitwr.myr/
use std use bio const main = { var f std.mkpath("tmpout") match bio.create("tmpout/test-unitwr", bio.Wr, 0o644) | `std.Ok bio: f = bio | `std.Err m: std.fatal("Unable to open data file: {}\n", m) ;; bio.putb(f, 42) bio.putc(f, 'ה') bio.putb(f, 0xa) bio.close(f); }